
$75 Cheap flight deals from St. Louis (STL) to Crestline (ONT)
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This Weekend's Flight Deals from St. Louis to Crestline
This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Airfares from $75 One Way, $150 Round Trip from St. Louis to Crestline
Prices starting at $150 for return flights and $75 for one-way flights to Crestline were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Crestline economy flight packages

The Sofia Hotel
Mar 4 - Mar 6
St. Louis (STL) to San Diego (SAN)
Reviewed on Jan 5, 2026

Fleur Noire Hotel - 21 and Over
Feb 27 - Mar 2
St. Louis (STL) to Los Angeles (LAX)
Los Angeles (LAX) to St. Louis (STL)
Reviewed on Sep 25, 2025

Paradise Point Resort & Spa
Feb 18 - Feb 23
St. Louis (STL) to San Diego (SAN)
Reviewed on Nov 27, 2025
Crestline packages with premium economy flights

Hotel Indigo San Diego-Gaslamp Quarter by IHG
Mar 4 - Mar 6
St. Louis (STL) to San Diego (SAN)
Reviewed on Aug 20, 2025

Margaritaville Hotel San Diego Gaslamp Quarter
Mar 4 - Mar 6
St. Louis (STL) to San Diego (SAN)
Reviewed on Oct 3, 2025

More About Flying To Crestline from St. Louis
Route Information for Flights from St. Louis to Crestline
Origin Airport IATA Code | STL |
|---|---|
Destination Airport IATA Code | ONT |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
St. Louis to Crestline
Orbitz combines guaranteed low prices with cutting-edge mobile tools for travel from St. Louis to Crestline to give you a travel experience that is second to none.
Bargain Travel at Your Fingertips
Orbitz provides the cheapest fares from St. Louis to Crestline. When reserving your flight you can mix and match a range of low cost airlines for you departing and returning domestic or international flights. This way you can travel on a budget while selecting the flights that suit your schedule.
Modern Tools for Fast-Paced Travel
Orbitz makes use of the latest technology to ensure that you are always kept up-to-date on the status of your St. Louis to Crestline flights. Through easy-to-use mobile Android and iPhone apps you can book low cost flights from St. Louis to Crestline and choose a range of cheap hotels to stay in.
Enjoy Stress-Free Travel with Flight Alerts
Once you have booked your flights from St. Louis to Crestline on Orbitz you will always be kept informed of any changes to your flight. When you opt into Orbitz’s free email and SMS alerts on your St. Louis to Crestline flights you can ask Orbitz to send the flight details to up to 6 other contacts, so keeping your family and business team informed is a cinch.
Frequent Flyer Program
For loyal Orbitz customers who fly from St. Louis to Crestline the chance to join our frequent flyer program is an added bonus. Simply log-on to your online account and input your frequent flyer number for future flights.
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St. Louis Airports
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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.
Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.
Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.

